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Old 12-01-2011, 12:22 PM   #16
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Old furnace removed , hole in chimney


depends on your local elec vs gas rates. call your utility co to find out, they should know which is cheaper to run. getting rid of the chimney saves NRG, makes your house more comfortable/less drafty and has other advantages. cost per BTU to run them is not the only REAL world cost. having to reheat the air infiltrated into your house by exhausting it up the chimney is expensive and those utility costs don't reflect that. in my experience elec tanks last longer as well. need to buy the tank and and have a 240 volt circuit run to it and have the panel space for it. best to get a quote from a local contractor or find a electrician and plumber to do it for beers or swap labor with what you can do for them.

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Old 12-01-2011, 12:53 PM   #17
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Old furnace removed , hole in chimney


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in terms of efficiency, isnt gas supposed to be cheaper? Also can anyone ballpark a electric heater installation will run me?
Yes electric is more expensive, but it will take a long time to recover the cost of the liner.

Home depot charges $289 plus the cost of the heater ($300-$400), assuming you have the electric available.

A new insulated liner, professionally installed can cost $1500-$4000 to bring everything up to code, it can quite involved, that is why I recommend you close it off. Or at least get a couple quotes to determine where you stand.
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Old 12-01-2011, 01:00 PM   #18
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Old furnace removed , hole in chimney


Thanks for your advice guys, I have to take a look at the panel and see if i have an empty slot there for a 240 outlet. I cant believe the contractor that did the heating didnt mention anything and let this hole unplugged...
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Old 12-01-2011, 01:17 PM   #19
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Old furnace removed , hole in chimney


need 2 slots for 240. stuff some fibreglass pink insulation in there temporarily or a 7 inch cap. if the chimney plugs or downdrafts and it will with an open hole you can get CO poisoning.
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Old 12-01-2011, 03:13 PM   #20
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Old furnace removed , hole in chimney


As long as i plug the hole, do you think this could last at least one winter? i dont have the budget to get a new heater this winter.

Also, after i do get the heater, how do i completely seal off the chimney? (i'm guessing from the roof)

Appreciate your help!
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Old 12-01-2011, 03:29 PM   #21
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Old furnace removed , hole in chimney


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This is in Jersey, i will peek inside the chimney to see if anything is there...
Code in New Jersey is the same as the rest of the USA. IMC and NFGC both require it to be lined. It should have been done as part of the furnace change out, or at least you should have been informed that it needs to be done.

As others said, during the winter, the old furnace helped keep the chimney warm. Now with just the water heater, it won't be enough.

Its more then possible it will fill your basement/house with CO. Or it m ay just deteriorate your chimney that the chimney falls in. or you may get a way with it for 1 winter. No one can say for sure.

We all realize that this close to Christmas no one has an abundance of money to spend. Of course, we also want everyone to still be alive and healthy to enjoy Christmas also.
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Old 12-01-2011, 03:29 PM   #22
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Old furnace removed , hole in chimney


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Originally Posted by yuriy128 View Post
As long as i plug the hole, do you think this could last at least one winter? i dont have the budget to get a new heater this winter.

Also, after i do get the heater, how do i completely seal off the chimney? (i'm guessing from the roof)

Appreciate your help!
A cap, or plate on top of it is best.
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Old 12-02-2011, 08:51 AM   #23
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Old furnace removed , hole in chimney


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As long as i plug the hole, do you think this could last at least one winter?
you can get a CO monitor and see if goes off
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Old 12-02-2011, 08:53 AM   #24
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Old furnace removed , hole in chimney


yes i have one on first floor, should i get one for basement and second floor, im guessing its a good idea...

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